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Finding the Fourth Proportional to 98,332.80, 135,696.64 and 55,316.96

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Solution

The fourth proportional to 98,332.80, 135,696.64 and 55,316.96 is: 76,335.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,332.80 : 135,696.64 = 55,316.96 : x
  2. Step 2: Convert to fraction form
    98,332.80/135,696.64 = 55,316.96/x
  3. Step 3: Cross multiply
    98,332.80x = 135,696.64 × 55,316.96
  4. Step 4: Simplify right side
    98,332.80x = 7,506,325,607.01
  5. Step 5: Solve for x
    x = 7,506,325,607.01/98,332.80
  6. Step 6: Final answer
    x = 76,335.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.